Fix RTypesI.{cpp,h} whitespace
Fix whitespace in PermissionsI.cpp
Fix default permissions from string

PermissionsI.perm1 wasn't being properly initialized
leading to invalid trues from the getter methods.
Use explicit "omero.group" rather than -1

In gh-984, @rleigh-dundee saw testAdjustPermissions fail
periodically, likely caused by the default group of the root
user.
Merge pull request #999 from joshmoore/more-cpp-test-fixes

More CPP test fixes